Visible index



J'ul 27,1926.

F. D. POWELL VISIBLE INDEX I Filed Dec. 21, 1922 b I 1 l along the frameso as to expose that Patented 27, 1926.

. FRANK p. POWELL; or CHICAGO,

ACME oAImsYsTEM COMPANY, or CHICAGO, rumors, A oonrona'r on or ILLI-NOIS.

vIsIBL 'IitnEx.

. Application filed membe 21,1922 ,Seria11 1":o..'608,233.'

upon the'folded edge ofa card or sheet to protect the sheet or card,orto supportthe sheet or card between the flanges of a frame.

Among the salientobjects ofthe invention are to provide a tube of foldedtransparent substance such as pyrolin, celluloid or the like, which maybe fitted over the folded upper or lower edge of the sheets or cards andsupported between the flanges of the frame, or the tubes supporting thecards may be carried by members running longitudinally of the tubes andhaving projections at both ends beyond the tube to engage the frameinwhich the card is supported; to provide tubes which hold the sheetsinoverlapping relation and exposing only the protected portion ofthe'sheet while the free ends are held beneath the tubes which havetheir extremities sprung I beneath the flanges of the frame; to providea construction whereby entries may be made upon the card by sliding. aplurality of tubes portion of the card available for'entry.

Fig. 1 isa'perspective view of a preferred type oftube showing one endand a small portion of thetube to show thefolded eta struction.

' Figs. 2 and 3 are similar views of modified forms.v a

Fig. 4' shows two tubes of the preferred form with the card or sheet inposition and a supportingmember which mayor may not be used to engagethe lateral flanges ofthe frame. I Fig. 5 is a face view of a framecarrying the tubes and folded index cards, and F ig.

6 is a cross sectional view taken on line 6-6 of Fig. 5. V

Referring to the drawings, 1 is a pyrolin tube which ha sa-do'ubled-backlower por-" tion 2, and an upperface 3 beneath which thefolded printed portion-of the card or" sheet appears. 4 is a verticalabutment portion against which the'next adjoining tube contacts. 5 is aflange port-ion overlyingtheupper section of the card or sheet andserving to protect the sheet and also .to hold the free end of the cardor sheet 'inaflatposition in the frame. The modified formsof the topface 3 of the tube.

' abutting position.

member. I

ILLINOIS, AssIeN oR, BYQMESNE AssIGNM' NTsTo Q spective end views shownIin'Figs-L Q'and 3.

' In Fig.4 the card or sheet 11 isfol'de'd that one face of a fold isexposed'beneath It will be noted that each of the tubes has thisbroadtop back uponitself in' two successive folds so transparent facethrough which printed matter on the folded portion serves toiden- I 7t'ify the card held by the respective tubes. These tubes and cards areadapted to be positioned beneath the flanges of card j frames, notshown,- but-well known in this I "art. In certain cases the ends of thedevice are inserted beneath the' frames, or a sup-'7" port member suchas that shown at 12 run? ning longitudinallyfthrough the tubesandf;projecting beyond the ends of the tubes to porting the cards 11.

engage the frame 13 may-be used for su frames is somewhat differentfrom-the normal manner in supporting overlapping visible index cards onthe frame. It differs in that the'cardsor sheets instead of having freeoverlapping ends, have their free ends confined or held beneath thetubes, that is, the frame is formed so as to provide a vacant spaceabove its central web between the channels. The sheets orcards are held,

beneath the tubes and are positioned in over-5 lappingrelation beneaththe tubes.

In order'to make an entry upon one of the cards, it is necessary toseparate the tube supporting this card from the adjoining card so as toexpose the proper'card so that the entry can'be made. A vacant space atthe top of the frame is left for the purpose of permitting the slidingofthe tubes in this manner. When the entry has been made, the tubes may bereturned to their The face o f the frame when'the tubes and of tubesthrough'the front faces of which the printed matter on the foldedportion of thecards identifies the subject matter of the cards orsheets, so that there is no printed or exposed portion of the card leftunprotected, except the lowest cardin the" frame,

whichmay: be equipped with a protective fcards are in. position,presents a plurality 7 1.Transparentflexible tubes adapted to supportindex elements in overlapping relation integrally connected, one of saidside Walls being of less idth to I provide a continuous slotted openingon that side and an angular 1 extension from 1 fiange .on the tubes,said flange: functioning each tube comprising an element hav lngsubstantially parallel spaced side vgialls the opposite Wall forming ato hold the separated index elements in a flat position. i

2. Transparent flexible tubes adapted to support indexelementsEinoverlapping relation, each comprising spaced substantiallyparallel side Walls having a continuous slotted longitudinalopeninginone. 01Ev s aid Walls, adapted -'tohave an edge. of lthe. indexeleinents inserted therein, an angular extension iroin one Wallprojecting in substantiallytho same plane as the side Wall provided withthe slotted opening forming a flange fonholding the index members in aflat position, and support members insertable 30 :in the tubes.

1 FRANK D4 POWELL.

